This art has grown a lot since the Robin Hood 1 cover. Sure, that one was attractive, but there's such a great understanding of the drawn Muppety form. I think this guy gets it best of the artists so far. It's not too cartoony and not too rigidly puppet. I especially like the Gonzo and Camilla cover. It's sentimental without taking the easy syrupy route.
I've enjoyed all of the Muppet artists (except the one who provided the internal Robin Hood artwork). I'm really digging the Pigs in Space art too from what I've seen. Still have to pick that up.